From: Arnd Bergmann <arnd@arndb.de>
To: Stanimir Varbanov <stanimir.varbanov@linaro.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>,
stable@vger.kernel.org, Hans Verkuil <hans.verkuil@cisco.com>,
Mauro Carvalho Chehab <mchehab@s-opensource.com>,
Andy Gross <agross@kernel.org>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>,
linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] media: venus: remove invalid compat_ioctl32 handler
Date: Wed, 6 Nov 2019 10:06:54 +0100 [thread overview]
Message-ID: <20191106090731.3152446-1-arnd@arndb.de> (raw)
v4l2_compat_ioctl32() is the function that calls into
v4l2_file_operations->compat_ioctl32(), so setting that back to the same
function leads to a trivial endless loop, followed by a kernel
stack overrun.
Remove the incorrect assignment.
Cc: stable@vger.kernel.org
Fixes: 7472c1c69138 ("[media] media: venus: vdec: add video decoder files")
Fixes: aaaa93eda64b ("[media] media: venus: venc: add video encoder files")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/media/platform/qcom/venus/vdec.c | 3 ---
drivers/media/platform/qcom/venus/venc.c | 3 ---
2 files changed, 6 deletions(-)
diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
index 7f4660555ddb..59ae7a1e63bc 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -1412,9 +1412,6 @@ static const struct v4l2_file_operations vdec_fops = {
.unlocked_ioctl = video_ioctl2,
.poll = v4l2_m2m_fop_poll,
.mmap = v4l2_m2m_fop_mmap,
-#ifdef CONFIG_COMPAT
- .compat_ioctl32 = v4l2_compat_ioctl32,
-#endif
};
static int vdec_probe(struct platform_device *pdev)
diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index 1b7fb2d5887c..30028ceb548b 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -1235,9 +1235,6 @@ static const struct v4l2_file_operations venc_fops = {
.unlocked_ioctl = video_ioctl2,
.poll = v4l2_m2m_fop_poll,
.mmap = v4l2_m2m_fop_mmap,
-#ifdef CONFIG_COMPAT
- .compat_ioctl32 = v4l2_compat_ioctl32,
-#endif
};
static int venc_probe(struct platform_device *pdev)
--
2.20.0
next reply other threads:[~2019-11-06 9:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-06 9:06 Arnd Bergmann [this message]
2019-11-06 10:09 ` [PATCH] media: venus: remove invalid compat_ioctl32 handler Stanimir Varbanov
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